Improvement in sewing-machine shuttles



P; DIBHL. SeWng-Maoh'ine"Shuttle.

No. 200,606. Patented Feb. 26,1878n UNI'I'ED STAT-Es PATE'NT OFFICE.

PHILIP DIEHL, ,oE ELIZABETH, NEW JERSEY, AssIGNoR To THE `SINGERlMANUFACTURING COMPANY, OF NEW YORK, N. Y.

IMPROVEMENT IN EWING-MACHINE SHUTTLES.

Specification forming part of Letters Patent N0. 200,606, dated February26, 1878; application filed September 5, 11-577.

TO all whom it may concem:

Be it known that I, PHILIP DIEHL, of Elizabeth, in the county of Unionand State of New Jersey, have made an invention of certain new anduseful Improvements in Shuttles for Sewing-Machines; and that thefollowing is a full, clear, and eXact description and specification ofthe same.

My invention consists of a solid frame shuttle, which exposes the bobbinto view, and is without hinge or joint; also, of the combination of thesaid solid frame shuttle withdevices for retainingthe bobbin and foroperating on the shuttle-thread, all as specified in the clailns at theclose of this description.

The accompanying drawings represent the mode in which I have embodiedthe invention in practice.

Figure 1 represents a top view of the said shuttle, with thethread-bobbin in place. Fig. 2 represents a view of the reverse side ofthe shuttle, with the bobbin removed. Fig. 3 represents a plan of theback of the same, with the bobbin removed. Fig. .trepresents a view ofthe front or sole of the shuttle.

The frame shuttle thus represented has a solid front plate, A, and abail, B, connected solidly together, without any movable joint betweenthe two. The space between the bar of the bail B and the plate Areceives the thread-bobbin O, the butt e of the bail being socketedinternally to receive one of the pivots of the bobbin, and the beak a ofthe bail being socketed laterally to admit the Other pivot of thebobbin. The bobbin is kept in place by a spring, d, whose curved endlaps over the socket in the beak of the bail. An extension of the samesprin g forms the threadguard n, and its rear end, being free, permitsthe thread to be readily drawn beneath it. At the opposite side of theshuttle thereis a tension-Spring, m, which creates tension on theshuttle-thread by pressing it toward the plate A., This tension-Spring.has a guide-eye to center the delivery of thread, and a slot, s,eXtending from this guide-eye outward, enables the thread to be readilyinserted in it, while the rear end of the tension-spring, be-

ing free, permits the thread to be readily passed beneath it and drawninto the guideeye.

The guard n may be riveted solidly to the plate A of the shuttle; butthe Spring-tension m is connected with the plate A by means of anadjusting-screw, i, by moving which the tension canj be varied.

In order that there may be a suflicient depth of screwed socket in whichthe stem of this adjusting-screw is held, the plate beneath the butt'rof the Spring-tension is thickened in the form of a boss, and the buttof the tenion-spring is bent in a bow to straddle this oss.

The jointless frame shuttle may be formed of one piece of material, suchas malleable iron; or the bail. B and plate A may be punohed separatelyout of steel, and riveted solidly together.

The peculiarity that the bail and plate are jointless or connectedwithout any hinge-j oint, that permits the bail'to turn relatively tothe plate, is a characteristic feature of the invention 5 and theconstruction of the shuttle on this system is a great advantage ascompared with skeleton shuttle frames, in which the bail and plate arehinged together, as there are no joints to work loose by wear, and thefirst cost is reduced. On the other hand, as the shuttle is a mereframe, instead of a case or boX, it may be made of light weight, and thebobbin is eXposed to view so that the operator can note at any time thecondition of the bobbin without removng the shuttle or having to open acase.

The plate of the shuttle, being without opening, presents a broadsurface for Wear at a place where the wear is always greatest.

I claim as my invention-- 1. A solid frame shuttle for a sewing-machine,oonsisting, substantially as before set V shuttle with a spring-latch,to hold the bobbin to the bail.

3. The combination, substantially as before Wtness my hand this 1st dayof August, 4

set forth, of the jointless bail and plate frame A. D. 1877.

shuttle With the teniOn-Spring to makev tension On the shuttle-thead.PHILIP DIEHL.

4:. The combination, substantially as before set forth, Of the jointlessbail and plate frame Witnesses:

shuttle, the tensiOn-spring, ani the thread- FRED. MAETSEHKE,

guad. JAMES MEHAN.

